Lubricator.



C. W. MANZELf LUBBIOATOB.

' f PPLIOATION IILBD 116.211, 1905.

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LUBRIGATOB..

APPLICATION FILED AUG. 24, 1905.

Patented May 4, 1909.

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A LUBRICATOB.

\ APPLICATION FILED AUG. 24, 1905. 920,769.

Patented May 4, 1909.

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LUBRIGATOR. APPLIOATION FILED 11116.24, 1905.

Patented May 4, 1909.

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` LUBEIOATOB.

` 'APPLICATION FILED AUG.24, 1905.

920,769, Patented May 4, 1909. 8 SHEETS-SERBIE.

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LUBRIGMOB. l A'PPLIGATION FILED AUG. 24, 1906. 920,769. Patented May 09. s sHzBTs-s r T a.l

mnesses f CHARLES W. MANZEL, OF

BUFFALO, NEW YORK, ASSIGNOR, BY MESN E ASSIGNMENTS, TO J'. L. OSGOOD, OF BUFFALO, NEW YORK.

nuisiiiciiioii.

Specification of Letters Patent Patented May 4, 1909.

Application filed August 24, 1905. Serial No. 275,615.

To all 'whom 'it may concern: i

Be it known that I, CHARLES W. MANzEL, a citizen ofthe United States, residing at Buffalo, in the county of Erie and State of New York, haveinvented a new and useful Improvement in Lubricators, of which the following is a specification.

This ,'nvention relates to a force-feed-lulocomotives for oiling the steam cylinders and other parts, suoli as the air pump of the brake mecl anism.

One of the objects of my invention is to so combine the pump or pumps with the reservoir as to e ectually exclude air therefrom and the conduitsor passages connected therewith and at the same. time dispense with stufling boxes. Y A further object is the provision of a sight- ,feed lubricator which isV simple and compact in consti'uction and positive and reliable in operation. v

Another Objectis to provide the pump' of the lubricator with simple regulating means whereby the same can be adjusted to deliver a greater or less predetermined quantity of oil, as desired.

A further object ofthe invention is to rovide the lubricator with efficient. contro ing means by, which the oil in the reservoir can be discharged directly into the pipe lines or conduits leading to the chest lugs of the steam cylindersr forV priming t e same, Aor circulated through the pum and the reservoir without assing throu'g said ipes, for maintaining t e oil in the reservoir at the proper level to always submerge' the pump or umps and exclude aii from the saine.

n the accompanying drawings consisting of S sheets: Figure 1 is a side elevation of an apparatus embodying the improved lubricator, the same being a plied to a locomotive which latter Iis shown y dotted lines. Fig. 2 is a top plan view of the a paratus. Fig. 3 is ari-enla ed front view o the lubricator. Fig. 4 is a side elevation thereof, with the air motor shown in longitudinal section. Fig. 5 is a veiticalsection inline 5-5, Fig. 3. Fig. 6 is a vertical section in line 6--6, Fig. 13. 7, 8, and 9.are longitudinal sections of the controlling valve in line 7-7, 5, showing different positions of the v ve key. Figs. 10 and 11 are transverse sections in lines 10-10 v'and 11-l1, Figs. 8 and 9, respectively. Fig. 12 is a horizontal sectionof the lubricator in line 12-12, Fig. 5. Fig. 13 is a vertical section thereof in line 13-13, Fig.- 5.' Fig. 14 is' a fragmentai'y vertical section in l1ne'14-14, Fig. 12. Fig. 15 is asimilar-section in line 15-15, Fig. 5. Figs. 16 and 17 are fragmentary .horizontal sections in lines 16--16 and 17-17 Fig. 5. Fig. 18 is a fragmentary lvertical section of the drip-nozzle, onan enlarged scale. Fig. 19 is an enlarged top plan view of one of the chest-plugs. Fig. 20 is a vertical section thereof. Fig. 21 is a transverse section in line 21-21, Fig. 19. Fig. 22 is a horizontal section in line 22-22, Fig. 19.

Similar letters of reference indicate corresponding parts throughout the several views. In the drawings is shown a multiple lubricator having four oil pumps, two of which -are ada ted to supply the steam cylinders ,of the ocomotive and the other tivo the cylinders of the 'air-pump of the brake mechanism. The im rovements are, however, equally applicable to a lubricator having a Single ump Thexliody or reservoir A lof the lubricator is .rectangular and provided with a removable front plate A1. In its top the reservoir is provided with a iilling tube b closed by a screw plug b, said tube carrying a depending `tubular strainer C for intercepting any foreign substances in the oil. in the lower portion of the reservoir are arranged a suitable.

number of force pumps or delivery cylinders D, D, D2, D3, four being shown in the diz-:wings foi supplying the various cylinders above -mentioned. Y

The plungers of the pumps Awhich supply the steam'cylinders are secured'at their projecting rear ends to a cross head E having orwardly projecting arms provided with trunnions e, and the lungei's lZ1/'oi the other two pumps are secure yto a similar cross head El. The cross -headfE is reciproca-ted by a depending arm F secured at itsupper'eiid to a transverse rock shaft F" suitably joiirnaled in theiipper portion of the reservoir,l `as shown .in Fig. 13, said arm having forked lower ends which straddle the trunnions et'of said cross-head. The other cross head El is actuated by asimilar arm F 2 depending from 'a shaft 2 F3, preferably arrange( the rock shaft FL, as shown.

in line with The air and steam cylinders of the air pump require less` lubrication than the main steam .cylinders of the locomotive, 'and the plungers of the pumps D, Ds which supply the 'first-named cylinders are therefore provided with a comparatively slow actuating mechanism and the plungers of the pumps D, D1 with a rapid actuating mechanism, both of which-mechanisms may be of any suitable construction. Preferably the slow actuating mechanism consists of an eccentric g loosely mounted on a horizontal shaft g1 and closely fitted in a longitudinal slot q2 of the rock arm F2 so that the rotation of the eccentric causes the latter to vibrate. The arm F2 is loosely hung on the shaft F3. The shaft g1 is secured atene end in a hanger' g3 keyed to the shaft F3. This shaft is normally held from turning by an arm or handle g4 pivoted to its outer end by a transverse pin g5" and interlocking with a notched plate g6 secured to the adjacent side of the lubri' 'cator body, as shown in Figs. 3, 12 and 13.

To the eccentric is secureda ratchet wheel g7 with which engages a feed pawl g8 carried by an oscillating arm g". This arm is pivoted at its lower end upon the shaft g1 and swung in a forward direction by a piston H sliding in a pneumatic cylinder H1 to which compressed air is admitted intermittently by any suitable means, the air in front of the piston being exhausted through a port h in the front portion of the cylinder. The re rear side of the piston H, thespring reacts and retu .is theoscillating arm to its initial position.

If desired, the pumps D2, D3 may be operated by hand by swinging the arm or handle g4 outwardly out of engagement with the notched late g6 and rocking the shaft F3 by means ofp this handle the motion of the shaft being transmitted to the de )ending arm F2 through the medium of the anger g3, shaft g1 and eccentric g. As shown in Fig. 13, a spring g1 connects the handle g4 with an arm g11 secured to the projecting end of the shaft l"3 and serves to yieldingly hold the handle in its inner locked osition. This spring is referably arrange in `transverseopenings `-mined quantity of oil to t tudinal `ormed in said arm and handle, as shown.

As illustrated' in Fig. 4, the operating l mechanism of the pumps D, D1 preferably i consists of an air motor comprising a .pair of cylinders J, J, each containing a reciprocatl ing piston J 1. These pistons are connected 1 :i1 withqwhich engages the lower end of a rockfarm j? depending from the shaft F1. This -arm, likel the handle g, is pivoted to the projecting end of said rock shaft by. a transverse pin j, so that it can be swung out of engagement with the piston rod for operating the pumps D, D1 by hand; and said arm is providedwith a spring j? similar to the spring g1 for retaining it in its normal iosition.

Compressed air or other flui under pressure is alternately admitted to the outer ends of the motor cylinders J for reciprocating the pistons, the admission of the fluid being controlled by'a valve `mechanism J2 of an'y suitable construction. i

With each pump or delivery cylinder D, D1, D2, D3 is preferably combined a primary or regulating cylinder l arranged at one side thereof and adapted to sup ly a predetere same. This regulating cylinder contains a plunger k1 which is secured to and actuated y the corresponding cross head E or E1 and receives` the oil from the reservoir through an inlet opening k2 in its upper side, as shown in Fig. 14., a suitable strainer 7&3 being applied to the, opening. The'delivery end oft-his regulating cylinder is' connected with a sight-chambei` M by a passage m ascending from its rear end and extending thence horizontally above said chamber, the horizontal portion m1 of the passage terminating iny a drip nozzle m? -which depends into the chamber and from Awhich the oil falls. in drops. This si htchamber is locatfe'd at the front of the lu ricator and provided in its outer wall with a transparent pane ma of glass or other suitable material through which-the engineer may observe the quantity and ra the drop-feed. In the bottom of t e sight-l chamber below each drip-nozzle is located a receiving funnel 'm4 whence the oil passes through a transverse passage zm5, 'a longiassa e 'mf anda descending passage m7 into t e corresponding secondary or delivery-cylinder, as shown in` Figs. 5 and 17. In the ascending passage m is arranged a check valve m? Which'closes. toward the delivery clin'der and is yieldingly held against its seat y a spring m10, as shown in Fig. 14. This 'spring is backed by a stop or rod m11 screwed into the upper end of the passage m.

In order to prevent the oil inthe horizontal passage m1 from flowing through the drip nozzle and being wasted when the force pump is at rest, a suitable check valve n is arranged in said nozzle, as shown in Figs. 14, 15 and 18. yThis valve closes upwardly against a scat n1 and is normally held thereto by a spring 'n.1 applied to its stem and lnterposed between an internal' shoulder of the nozzle and a nut 'n3 secured to the stem. This spring is of the proper tension to re; strain the escape of the oil from said hori# 65 by a rod y' having a central groove or recess i zontal passage when the force pump stops,

- the and yet oil to pass the valve when l p is in.op.eration. l I o igs; 5, 1 2, 14 andI 17 is a, regulating I piston or follower` fitted in an enlargement or ateral chamber o1 of the regulating cylinder whichv enlargement communicates withv said cylinder near its delivery end and is prefera ly arranged on the upper side thereof, as shown. T eA outward movement.' of the piston is limited by a stop or screw threaded rod o2 passing through a threaded" opening I inthe to 'of the oil reservoir and locked in' positiony aI 'am nut o3; The spring m1 is so regulated t at the resistance of the checkl valve m is lgreater than the weight or resistl ance of the regulating piston o.'

Upon theforward stroke of the plunger of the regulating cylinder the regulatlng piston o is, raised by the pressure in' the cylinder until'it strikes its stop 02, the oil in the cylin- 4der entering the -portion of the enlargement left. vacant4 by the ldisplaced piston. As soon as the regulating-piston is thusarrested,

i the continued pressure in the cylinder-overy comes the spring of the check valve m,

4vopening the latter and delivering a greater or less-charge of oil through the drip nozzle m2 into the funnel of the slght-feed chamber' M, according -to the extent of travel of the regulating piston permitted b its stop. The piston of theregulating cy der has a` .uniform, predetermined stroke'and the capacit of this cylinder is augmented' more or essvv y its enlargement according as the piston-is allowedto recede more or less by lits stop. Itfollows that by increasingl the capacity of the cylinder, a smaller uantity .Y of oil will be pumped into the ,sight-c amber and supplied to the delivery cylinder. .Thus

if'it is desired to suplply the maximum quantity of oil to the de very cylinder, the stop is adjusted to -its lowest position and if a smallerquantity is to be supplied the stop is raised to a greater or less extent.

' Upon th backward or return' stroke of the plunger of the regulatin cylinder 7c, a vacuum is created in said cy der, causin Athe piston lo to'. be depressed to 'its initial position, by'thL-atmospheric pressure upon the oilin 1the reservoir.. As shown in '5 and 1'6,-each delivery Y cylinder is provided infits discharge passage with one or more check valves p,jp1 of `any 'ordinary construction. These discharge pasy sages communicate by descending passages p2 with delivery nipples g which depend from lthe front plate Yof the oil reservoir and to which are attached the pipes or conduits leading to thechest plugs R ofthe steam cylinders or 'other parts to vbev lubricated. In the drawings, a set of three chest lugs is vshown for each "cylinder, these plugs lieing connected by individual' 'pipes g1 with a manifold or union g1 which in turn is connected with one'ofthe delivery-nipples .g by

a pipe g3., The-chest plugs may be of-an suitable construction, butA they are* pre erablyprovided with a vent and for'this purpose' are constructed as shown in 19322 The plug is rovid'ed inits oil passage with fan upwarr cap r2 providedat one side with a vent nipple 1' for the escape'of any air in the oil ipe.

est plug. This nipp cgis which l and communicates with said annilar space by a transverse passage 'ra intersecting the inner end of the longitudinal passage. By.

this construction, upon partly unscrewing the vhollow plug r4' any an' in the chest plug and the feed pipe connected therewith is allowed to. escape throughI the hollow plug. The passage'of theoilfrom the reservoir e of the lubricator Af'to the chest plugslI may be controlled by a valve of any suitable construction. The referred valve. shown in the' drawings is ocated at the .base of the reservoir and consists of a horizontal case S formedvinte al withthefront plate A1 an interposed etween thev delivery or cylinders D, D', D2,- D3 and the delivery# y closing check valve r and above said valve 'with a choke plug r1.

This plug -is inclosjed by an inlet chamber 'or umpv nip les g, and a rotary keyr or tapering plug i T tted in the case. This key is provided` with transverse ports t arranged to connect the discharge passages of the delivery cylinv ders 'withsaid nip les forforcing the oilv into and 'through t e feed pipes, as shown inFigs. 5 and 7. The lkey is also provided in its periphery with a longitudinal port or Ichannel t1 adapted 'to connect said nipples and pipes with a priming channel or passageu which extends from the llower portion of the oil reservoir to the. lower side of the valve case S, as shownin Figs. 7-11, this channel being vformed in -an enlar ement S1. of the valve case S and the front p ate of the oil reservoir, as sho-wn in Fig. 3. The valve case is provided in its bottom with discharge ports s arranged in line, with the delivery nipples q, and the longitudinal port t1 of the key is of sufcient length .to connect these ports with the priming channel ul whenthe ey is turned'to the position shown inFigs.A 9.and 11, so asto allow oil to iiow by gravity from the reservoir through saidV channel, longitudinal port 'and discharge ports intothe nipples g and pipes g3.

The key has a square end adapted to re- 4 ceive a wrench for tur-ningit, andthe'same is provided with Aarms or lugs t2 which'are adapted to be brought into register with a,

suitable marker lug t3 on the adjacent. endl the` pipe lines between the lu ricator and the.

chest-plugs, the controlling valve T is turned to the position shown in Figs. 9 and 11, and

' through the vents of the chest-plugs are opened by unscrewing the plugs 1'4. The oil now flows.

through the priming channel u, the controlling valve, the feed-pipes qa, q1 and the ventnipples r3 of the chest-plugs, carrying before it any air in the pipes and the inlet chambers of said plugs and expelling it throu h the vent-nipples. After thus priming t e system, the vent plugs are closed, 'the key of the controlling valve is turned to'bring its transverse ports t in line with the delivery ni ples g and the discharge passages of the de very cylinders D, D1, D2, D3, as shown in Fig. 7, and the oil pumps are actuated, whereupo oil is pumped from the reservoir the feed-pipes g3, g1 and the chest plugs R 1n an obvious marmer.

' By the use of the priming means above described, the conduits fromthe oil reservoir to the `'chest plugs are always `iilled with, a solid column o vand ,a 4positive and uniform feed of the oil'to the steam cylinders or other l301parts to be ,lubricated is therefore insured.-

Itsometimes 'happens that the engineer has no more oil aboard than that contained in the reservoir of the lubricator. In such a case, in ordeto maintain thenecessa level inthe reservoir to kee the pump cy inders submerged and exclu e air therefrom, it is only necessa to turn the key T so as to li'in its longitudinal port t1 in register'with the ischarge passages of the delivery cylinders, as shown in Figs. 8 and 10. In this position of the`key, the discharge nip les are cut oi from the pump cylinders an the oil delivered by lthe latter is simply' returned and reliable feedl of the,l oil to the parts tothe yluthrough the lonfgitudinal key-port and the rulpper ortions o the priming channels u into t e o' reservoir, the oil being circulated through the cylinders and the reservoir as long as the controlling 'valve remains in this pos1tion. To enable the engineer to observe the oil levelv in the reservoir the latter is provided in its front wall with a transparent panel or gage-glass v, the lower end of which terminates above the top of the pump c lindersso that even if the reservoir shoul not be refilled until the level reaches the lower end of thveqglage-O'lass, the pump cylinder and its inlet st' remain submerged, excluding air therefrom and insuring a stea bricated. A "1 It will be observed that the ends of the n pump cylinders through which the lungers they remain submerged so long as the level in the reservoir is not allowed to fall below the tops of the c linders. as a seal or pac g which eifectually prevents air from entering the pumps between the plungers and the bores of the cylinders and hence the atmosphere is also excluded from all the passa es and pipes leading from The oil thus acts' the pumps to the c est plugs. My improved arrangement, while affording this important advantage, at the lsame time sim liiies the construction of the lubricator by ispensing with stuffing boxes at the ends of the pump cylinders.

The use of stuflin boxes at the ends of the shafts F1, F3 is`a so avoided by locating the same in the upper portion of the reservoir above the customary oil level, as shown.

The several pump cylinders and sight-` chambers are preferably carried by or formed integral with the removable frontv late Aof the lubricator,v as bestshown in i igs. 5 and 14,-so that said parts are readily applied and removed with the plate. The pump cylinders extend through this plate and their outer ends are closed by screwplugs, asv shown. Upon removing 'these plugs, convenient access is had to the check valves p, p' for repairing or renewing the same. v

I do not wish to claim in this application the distributer al in combination with the chest plugs, as the same forms the subject of a separate aplplication led by me August 2,8, 1905, Serial o. 276,036; nor the construction of the air motor shown herein as the same is claimed in\another application filed August l28, 1905, Serial No. 276,035; nor the chest plug with the plugged vent ni ple r3, as the same forms the subject of anot 'er application filed Augustv 19, 1905, Serial No.

rock-shaft and capable of moving into or out.

of engagement wit the movable member of the motorsubsta ially as set forth.

2. In a lubricator, the combination of a reservoir, a pump sup lied therefrom, a shaft journaled in the bo y of the lubricator, a rock arm mounted on saidgshaft and connected with the pump-plunger, a motor having a movable member, a combined actuatmg-arm and handle movablyattached to said rock-shaft and capable of moving Vinto or out of engagement with the movable member of the motor, and a spring tending `to hold said handle in engagement with said member, substantially as set forth.

3, In a lubricator, -the combination of a reservoir, a lpump arranged in the reservoir and'supplie therefrom, a rock shaftv journaled in the body of the lubricator above the pump, a rock arm mounted on said shaft and .connected with the pump-plunger, a motor having a reciprocat' 0' member and a combined rock' arm and iandle pivoted to the end of said shaft to swing lengthwise thereof and adapted to move into. or out of engagement with the reciprocating member of the motor, substantially as set forth.

4. In a lubricator, the combination of a reservoir, a )ump arrangedin vthe reservoir andtsupplie therefrom, a rock' shaftjoui'- naled in thebody of the lubricator above the pump, a. rock arm mounted on said shaft and connect-ed with the pump-plunger, a motor having a reci irocating member, a' combined rock-arm and handle pivoted to the end of said shaft to swing lengthwise thereof Aand -adapted to move into dr out of engagement with the reciprocating member of the motor, and a springconiiecting said arm with a' part i of said shaft, substantially as set forth.

5. .In a lubricator, the combination of a reservoir, a pump arranged in the reservoir and supplied therefrom, the plunger of thev pump extending through the rear end of the pump barrel, a cross head connected with the portion of the pump-plunger outside the barrel and provided at its sides with trunnions, a rock shaft journaled in the body of the lubricato'r above the pump, a depending arni hiounted on said shaft and provided with a bifurcated lower end wl'iicli engages said trunnions, and means for actuating said shaft, substantially as set forth.

6. In a lubricator, the combination with a 40 vpump cylinder and its plunger, ofBa reservoir mclosing the ump cylinder and `having a gage-glass the ower end of which terminates above the to of said cylinder; the pluri er, the inlet of t e cylinder and the rear en of the' cylinder through" which the plunger passes being arrangedin the. lower portion' of the reservoir and wholly within the same and said inlet being located in the 'upper side of.

-the cylinder, whereby said parts are, norsubmerged by the oil in the reservoir, substantially as set forth.

7 In a lubricator, the combination of a source of supply, a pump-cylinder connected therewith and containing a plunger, means for imparting a uniform stroke to the plunger, and means independent of the plunger for varying the capacity or internal' area of the c yiifideigl substaiitialbv as set forth. y 8. In a`.lubricator, the combination of 'a reservoir, a'pumi supplied therefrom and Yhaving its cylinder provided. with an enlargement or extension, 'a follower arranged insaidsextension and adapted to recede u nder the pressure therein, and means for limreservoir, a

10. Ina ubricator, the combination of a reservoir, a pum having' its cylin( ei'provided with an enlargement or extension, a follower arranged in said extension and adapted .to recede under the pressure therein, and an adjustable stop arranged opposite the outer end of said follower, substantially' as set forth.

11. In a lubricator, the combination of a reservoir, a ump `supplied therefrom and having its cy inder provided with an enlargement or extension, a follower arranged in said extension and an adjustable sto rod arranged opposite the outer end o said follower, and a s ring-pressed vcheck valve arranged in the discharge assage of the pump, substantiall as set forth).

12. In a ubric'ator, the combination o f a ump supplied therefrom and' having its cy nder provided with an enlarge,- ment or extension, a follower arranged in said extension and adapted to recede. under the pressure therein, adjustable means for limiting the outward movement of the follower, a s ring pressed check valve arranged in the' disdharge passageof the pump, and adjusting means for regulatin the tension of said valve-s ring, substantia y as set forth.

.-13.' Ina ubriiatr, the combinlzticpnhof a reservoir, 'a'fre atin um su 'e t erefrom and havigiilg its yilindgr-pvided with supplied therefrom a'nd an enlargement or extension, a follower arrangcllin said extension, adjustable means for A sight-cham er connected the discharge passage of said pump and'containing a dripnozzle, a cheek valve arranged in said discharge passage, and a delivery lpump supplied from said sighthamber, su stantlal y as set forth.

14. In a lubricator, the combination of a reservoir, regulating and delivery pumps arranged horizontally in the lower portionl of the reservoir, the cylinder of said regulating for' limiting the recession of the followerna sight-chamber located above the plane of said iumps, there being an ascendmg passage leading from the discharge end ofthe cylmder vof the regulating pump t'o the top of the sight chamber, and a'passae leading from the bottom of the sight-cham er to the cylintin the recession of the follower, a

izo

pump having an enlargement or extension, a f

ol'lower arranged iii said extension, means Vposition of the valve and With the'priming channel in another position thereof, substantially as set forth.l

return or circulating passage, .a pump sup- 15. In a lubricator, the combination of a `reservoir having a discharge passage and a i priming passage, a pump supplied from the reservoir, and means for connecting saiddischarge passage With the pump or said priming passage, at Will, ,substantially as set forth,

16. In a lubricato'r, the combination of a reservoir having a discharge passage, a controlling valve arranged in said passage, a pump supplied from the reservoir and connected with the case of said valve, and a priming channel leading from the reservoir to said valve case, themovable member of the valve having ports arranged to con'nect said discharge passage with the pump in one 17. In a lubricator, the combination of a reservoir having a discharge passage, a controlling valve arranged in said passage and comprising a case and a rotary key or plug, a pump supplied from the reservoir and connected with said valve case, and a'priming channel leading from the reservoir to said valve-case, said valve-keyhaving a transverse feed'port arranged to connectsaiddischarge passage-With the pump in one posi-VA tion of the key and -a longitudinal priming port arranged to connect said passage With said priming channelin another position of the key, substantiallyas set forth.

18. In a lubricator, the combination of a reservoir havingfa discharge passage and a pump supp lied from the reservoir, and means arranged between the pump and discharge passage for connecting the pump with the discharge passage or said return passage, at will, substantially as set forth. f 19.- In a lubricator, the"combination of a reservoir having a discharge-,passage and a combined riming and return channel, a

lied from the reservoir, and a controlhng valve having ports arranged to conneet the discharge passage either With the pump' or the priming and return channel or to connect the pump with the prlmmg and return channel, at will, 'substantially as set forth.

20. In a luhricator, the combination ofa reservoir having a plurality of discharge passages, a controlling valve arranged in said passages and comprislng a case and a rotary ey or plug, a plurality of pumps supplied l from said 'reservoir and connected with said valve-case,'and combined priming and .freturn channels leading from the reservoir to said valve case, said valve-key having transverse ports arranged to connect said discharge passages with their respective pumpsv in one position ol the keyand having also a peripheral longitudinal port arranged to conneet said priming and return channels either With the discharge passages or the pumps 1n other positions of the key, substantial y as set-forth. l

Witness my hand thls 21st day of August,

CHARLES W. MANZEL- Witnesses C. F. GEYER,Y E. M. GRAHAM. 

